Packing-ring for fruit-jars and the like and method of making the same.



. No. 834,965. PATENTED NOV. 6, 1906.

v w. w. GADLB. v

PACKING RING FOR FRUIT JARS AND THE LIKE AND METHOD OF MAKING THE SAME. APPLICATION FILED JAN. :5, 1900.

. I I [NVE/VTOR. @W M 44% K Attorney.

.. UNITED STATES PATENT OFFICE.

'WHILBERT w. OADLE, OF WILLIAMSBURG, PENNSYLVANIA. PACKING-RING FOR mun-ans AND THE LIKE AND METHOD OF MAKING THESAML' Specification of Letters Patent. Application filed January 3, 1906. serial No. 294,446.

. Patented Nov. 6, 1906.

'Blair, State of Pennsylvania, have invented certain new and useful Improvements in.

Packing-Rings for Fruit-Jars and the Like and Methods of Makin' the Same, of which the following is a spec' 'cation.

My invention relates-to an improved packing ring or gasket for fruit-j ars or thelike which when interposed between a 'ar and its cap or cover is intended to afi'or means of hermetically sealing the jar.

Packing-rings of the general class referred to are familiar in the art, having been made for a lon time of india-rubber, or, more recently, o strawboard provided with a coating of rosin. Numerous objections are apparent in practice to the use of either rubber or of rosin rings. to injure the contents of a jar u on which it is used by tainting the contents t 'ereof. When such a rin serves to'preserve the seal, it is liable to a here to the cap and the jar to such 'an extent as to produce difliculty 1n separat-' ing the cap from the jar. In respect to rosin rings in fact the only way to separate them is by the application of heat. Moreover, the difficulty in the removal of the rosin from the cap and the jar after 0 ening is objectionable in practice..- The rub er ring is open to the further objection that it frequently permits the breaking of the seal in consequence of its pliability, which permits it to escape from confinement between the. cap vand the jar, or'

onv account of its disintegration from 'any cause. .4 l f It is 'the object of my invention to obviate the disadvantages of rings heretofore employed for sealing fruit-j ars or the like by the employment of a compressible ring or gasket consisting; essentially, in respect to its sealin function, of a waxy material, and preferably 0 araflin, which is not only suitable for the fbrming of a seal, but is hygienic, germ-proof, and tasteless. '-The properties of parafiin which render it valuable for the purposes in question have been heretofore appreciated; but the nature of the substancehas been such as apparently expensive 'j ar-closures for confining the material, .and thereby rendering its use available.

My invention consists in providing as ave- A ring of either rubber or rosin tends detached.

hicle for the parafiin a gasket of such porosand toughness of substance as will permit t e the ody of the gasket and will at the same time confine it in position to enable and comel the performance of its scaling function.

ncidentall for the better performance of this office emplo a gasket of special sha e and with a specia superficialcoating of t e material with which it is saturated; but these whereof that which constitutes t e same be hereinaft er set forth in the following specification and succinctly described in the appended claims, In the accompanying drawings, which constitute apart of this specification, Figure I is a central verticalsection of the 11 per vpart of a fruit-'ar'and itscap in closed position thereon, s owing m gasket confined between the ca and t e jar, the form of cap and of jar il ustrated being presented only for the purposes of explaimng the form and function of my gasket. Fig. I is a top plan plaraflin or the like to entirely permeate 1 features I regardas details of I'n invention view of the subject-matter of F I withthe cap removed and a portion of't e'threaded.

tionship of the thread. Fi II is a planview of the gasket fragment fof tie gasket intended .to illustrate the superficial'coatirgg with which the gasket is preferably provi ed.

In describing the method of manufacture of my packing-ring shallrefer to the numer- 'alson'the drawings, wherein asket to the neck and its- 1 indicates a vehicular body or baseof a the performance of its functions as a seal. The requisite qualities of the bod or base 1 being toughness, porosity, clea ess, and cheapness, I refer to ma e it of wood-pul preferably 0 that class known in the tra e as unbleached sulfite pulp. My method of manufacture consists in subjecting; the ring of the desired material and dimensions to'a bath of paraflin or like waxy material at a -temperature approximately its boiling-point and such as Wil render it perfectly fluid for a period of time suflicient to effect the comafiin or the like. The effect of the bath upon -the base 1 is to perfectly fill all of the interstices or pores of the material of which the 'ring, being so denominated because it constitute's the vehicle for confining the paraifin or otherv waxy material in formavailable for I plete saturation of the base 1 with the par- IIO 5 IV is a sectional .view of a saturated ring.

base 1 is made with the paraflin or the like material, thereby converting the base 1 into a fully charged or loaded vehicle for the wax. After the treatment above specified the saturated ring is allowed to cool and in the cooling process is drained, so as to preserve a substantial uniformity of thickness in the W hen cool, the ring is preferably subjected to a momentary bath in melted wax, preferably paraffin, at a low temperature. The result is to provide a superficial coating 2 of paraffin or the like material upon the ring, which peculiarly adapts it to the performance of its sealing function by providing a coating of pure parafiin upon the surfaceof the base 1 on all sides, and particularly to come into contact with the opposing faces of a cap 3 and jar 4.

Jars of the class to which my invention is a plicable are preferably screw-cap jars of t e general type shown in Figs. I and II of the drawings, wherein a neck 5 of the jar is provided with a projecting thread 6. In order to provide for the snug fitting of the ring to the neck 5, I prefer to provide the ring with an inner cut-away portion 7, as shown in Figs. I to III, inclusive, whereby the ring may be readily made to follow the thread 6 of the jar and when seated to closely hug the bottom of the thread 6, as indicated, for instance, by the numeral 8 in Fig. 11, except for that portion of the ring in which the cutaway portion 7 is provided. By this means the shoulders 9 and 10 defining such cutaway portion may be disalined and follow the thread 6 without injuriously distorting the ring while it is being applied to position about the neck 5 preparatory to the application of the cap 3, which is shaped to fit and is secured by the thread 6.

It will be readily observed that when my ring, made as above specified, is placed upon the packing-seat of a jar filled with material at a temperature suitable for preserving purposes the heat of the contents will suificiently melt the paraffin or wax, so that when the cap 3 is applied the ring will effect an hermetical seal between the o )posing faces of the cap and jar, as shown in ig. I.

What I claim is" 1. The method of producing a packingring for fruit-jars by saturating a suitablyporous base with waxy material heated to fluidity, and then cooling the saturated base.

2. The method of producing a packingring for fruit-jars by saturating a suitablyporous base with waxy material heated to fluidity, cooling the saturated base, and coating the saturated and cooled base with a superficial coating of waxy material.

3. As a new article of manufacture, a packing-ring for fruit-jars or the like consisting of a vehicular base saturated with a waxy material, said base when so saturated being adapted to present and confine in operative relationship between a jar and its cap the waxy material, substantially as and for the purpose specified.

4. As a new article of manufacture, a packing-ring for fruit-jars or the like consisting of a vehicular base saturated with a waxy material and provided with a superficial coating of said waxy material, substantially as and for the purpose specified.

5. As a new article of manufacture, a packing-ring for fruit-jars or the like consisting of a suitably-porous base made of wood-pulp saturated with paraifin-wax.

6. As a new article of manufacture, a packing-ring for fruit-jars or the like consisting of a suitably-porous base made of wood-pulp saturated with paralfin-wax and provided with a superficial coating of the same.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WILBERT W. CADLE. Witnesses:

A; G. I-IEYLMAN, (J. M. FORREST. 

